In short, I didn't become a Christian
because God promised I would have an even happier life than I had as an
atheist. He never promised any such thing. Indeed, following him would
inevitably bring divine demotions in the eyes of the world. Rather, I
became a Christian because the evidence was so compelling that Jesus
really is the one-and-only Son of God who proved his divinity by rising
from the dead. That meant following him was the most rational and
logical step I could possibly take.

- Lee Strobel

And here's a quote from C.S. Lewis...

A young man who wishes to remain a sound atheist cannot be too careful of his reading.